What We Can Do
Creating New Value for Industries Worldwide
through Contour Machining and Diffusion Bonding
Ceramics, refractory metals, and quartz glass are generally considered difficult to machine. Through the supply of custom-made mechanical components using these materials, we support your new product development and launch, extend the service life of existing components, improve productivity, and enhance yield through product redesign.
Why not create new innovation with Top Seiko?
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Technical Expertise
Expertise in Both Machining and Diffusion Bonding
Top Seiko began with precision machining of difficult-to-machine materials and has expanded its capabilities to diffusion bonding while solving challenges across a wide range of industries, including semiconductors, aerospace, and energy.
As a result, we are proficient in both machining and diffusion bonding, and can combine their respective strengths to achieve the required shape and functionality for each project. -
Development Capability
One-Stop Support from Material Selection
We maintain inventory of a wide range of materials, including alumina, zirconia, molybdenum, tungsten, tantalum, and quartz glass.
From selecting the most suitable material based on requirements such as heat resistance, electrical insulation, and wear resistance, to prototyping and mass production, we provide one-stop support.
When materials are in stock, delivery can be achieved in as little as four weeks. -
Quality Control
Strict and Clean Quality Management System
Our high-level quality control system has been developed through working with leading global manufacturers, including top semiconductor equipment companies.
We are equipped with advanced inspection instruments such as coordinate measuring machines (CMM), CNC image measuring systems, and flatness measuring equipment.
In addition, we are ISO 9001 certified and implement strict and clean quality control processes tailored to each industry.
Available Inventory Materials
Top Seiko maintains a wide range of material inventory—uncommon for a manufacturer of mechanical components in ceramics and refractory metals—enabling short lead times for custom-made products.
Below are the materials we keep in stock on a regular basis.
For materials not listed, we can also source from both domestic and overseas suppliers, so please feel free to contact us.
[In-Stock Materials]
Alumina (Al₂O₃), Aluminum Nitride (AlN), Zirconia (ZrO₂), Silicon Carbide (SiC), Various Machinable Ceramics, Quartz Glass / Heat-Resistant Glass, Silicon (Si), Sapphire (Al₂O₃), Composite Materials (MMC / CMC), Molybdenum (Mo), Tungsten (W), Tantalum (Ta), Titanium (Ti), Nickel (Ni), Niobium (Nb)
Industries We Serve
Semiconductors
Aerospace
Energy
Analytical, Inspection, and Measurement Equipment
Automotive and Mobility
Electronic Components
Medical
Equipment
Machining Centers
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z) | Specifications |
|---|---|---|---|---|---|
| 5-Axis Machining Centers | Makino Milling Machine Co., Ltd. | D300 | 2 | 300×500×350 | Center-Through |
| DMG MORI | NMV5000DCG | 11 | 730×510×510 | ||
| ZV400 | 2 | 600×425×450 | |||
| High-Speed 3-Axis Machining Center | Makino Milling Machine Co., Ltd. | IQ300 | 1 | 400×350×200 | Linear Drive |
| IQ500 | 1 | 500×450×300 | Linear Drive | ||
| Sodick | HS650L | 1 | 625×500×300 | Linear Drive | |
| 3-Axis Machining Centers | Makino Milling Machine Co., Ltd. | V56i | 3 | 900×550×450 | Center-Through Some Equipped with Pallet Changers |
| V55 | 1 | 900×500×450 | |||
| V33 | 1 | 600×400×350 | |||
| DMG MORI | NVX5100 | 32 | 1050×530×5100 | ||
| NVX5080 | 1 | 800×530×510 | |||
| NV5000 | 8 | 800×510×510 | |||
| NV7000 | 2 | 1540×760×660 | |||
| CMX1100V | 18 | 1100×560×510 | |||
| Brother Industries, Ltd. | S500X1 | 2 | 500×400×300 | – |
Lathes
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z) | Specifications |
|---|---|---|---|---|---|
| NC Lathes | DMG MORI | NL1500 | 5 | 260×590×100 | Second Spindle with Milling Function |
| NLX1500 | 1 | 260×590×100 | Second Spindle with Milling Function | ||
| 5-Axis Multi-Tasking Machine | DMG MORI | NTX1000Ge2/S | 1 | 450×±105×800 | Simultaneous 5-Axis Machining |
Grinding Machines
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z) | Specifications |
|---|---|---|---|---|---|
| Rotary Grinding Machines | Amada Machinery | SSR5 | 5 | φ550×125 | Horizontal Axis |
| SS501N | 1 | ||||
| SS501 | 1 | ||||
| SSR-5 UP | 3 | Metal Spindle and Ram Sliding Surface Specification | |||
| SSR-6 | 1 | φ638×143 | |||
| SSR-6 UP | 7 | φ550×143 | |||
| Surface Grinding Machines | Amada Machinery | TECHSTERD | 2 | 600×400×250 | – |
| TECHSTER-52 | 1 | φ55x180x250 | Centerless Function | ||
| TECHSTER-64 | 2 | 780x450x250 | |||
| Okamoto Machine Tool Works | PSG-64EXB | 1 | 600×400×260 | – | |
| Rotary Grinding Machines | San-ei Engineering | GSR-700 | 4 | φ700×150 | Vertical Axis |
| Cylindrical Grinding Machines | JTEKT | GL4P | 1 | φ300×500 | – |
| GE3Pi | 1 | φ60×250 | – | ||
| Tsugami | GU25 | 1 | φ80×250 | – |
Cutting Machines
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z) |
|---|---|---|---|---|
| Slicing Machines | Tokyo Seimitsu | TSN6030 | 4 | 600×300×200 |
EDM Machines
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z) |
|---|---|---|---|---|
| Wire EDM | Mitsubishi Electric | FA20VSM | 1 | 500×350×300 |
| MV2400R | 4 | 600×400×425 | ||
| 600×400×300 | ||||
| Small Hole EDM | Elenix | CT300FX | 1 | 300×200×300 |
| CT500FX | 1 | 550×380×400 | ||
| GT500FX | 1 | 550×380×450 |
Other Equipment
| Other Equipment | Manufacturer | Model | Quantity | Specifications |
|---|---|---|---|---|
| Laser Marker | Keyence | MD-X1000 | 2 | 125×125×42 |
| Automatic Tool Grinder | Cyber RC | GRISTAR MULTI EVOLUTION | 2 | 4-axis capability |
| GRISTAR MULTI 5Axis | 2 | 5-axis capability |
Measurement equipment
| Equipment | Manufacturer | Model | Quantity | Stroke (X, Y, Z)・Specification |
|---|---|---|---|---|
| Coordinate Measuring Machines | Mitutoyo | Crysta-Apex 776 | 3 | 700×700×600 |
| STRATO-Apex 9106 | 2 | 900×1000×600 | ||
| CNC Vision Measuring Systems | Mitutoyo | Quick Vision stream | 4 | 400×400×250 |
| Image Dimension Measurement Systems | Keyence | IM-6225 | 2 | 100×200×40 |
| IM-7020 | 1 | 90×90×30 | ||
| IM-8030 | 2 | 190 x 90 x 30 | ||
| LM-X100L | 1 | 300x150x75 | ||
| 3D Shape Measurement Systems | Keyence | VR-6200 | 1 | 278 x 134 x 69 |
| Laser Microscopes | Keyence | VK-X200 | 1 | 100-16,000 (Magnification) |
| Digital Microscopes | Keyence | VHX-1000 | 1 | 100-1,000 (Magnification) |
| Height and Flatness Measurement Systems | Keyence | HM-1200 | 2 | 100×100×75 |
| Measuring Microscopes | Mitutoyo | MF-UD1010D | 1 | 300×170×220 |
| Toolmaker’s Microscopes | Mitutoyo | – | 1 | 100×100×100 |
| Stereo Microscopes | Vision Engineering | Lynx EVO | 1 | 6×–60× (up to 240×) |
| Surface Roughness Testers | Mitutoyo | SJ-301 | 2 | Surface Tester for Flat Measurements |
| SJ-412 | 1 | Surface Tester for Flat Measurements | ||
| Leak Detector | Pfeiffer Vacuum | ASM340 | 1 | He Leak Test |
Cleaning Equipment
| Cleaning Equipment | Manufacturer | Model | Quantity | Remarks |
|---|---|---|---|---|
| Cleanroom | – | – | 2 | Compliant with JIS B 9920 Cleanliness Standard, Class 7 |
| 5-Tank Ultrasonic Cleaning Systems | Osaka Stainless | ROPWC-4060 | 2 | Inside Class 7 Cleanroom |
| Ultrasonic Cleaning Systems | Honda Electronics | WS-1200-28 | 6 | 500×600×200 |
| Hot Air Drying Ovens | Yamato Scientific Co., Ltd. | – | 2 | – |
| Vacuum Drying Ovens | Yamato Scientific | DP43 | 2 | Inside Class 7 Cleanroom |
| Vacuum Sealing Machines | Fuji Impulse | V-301 | 2 | Metal products are shipped with vacuum packaging |
| Single-Tank Ultrasonic Cleaning and Drying System | Kyoden Precision | PCS-3420 | 1 | Integrated cleaning and drying process |
Process Flow
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FLOW.01Inquiry / ConsultationPlease provide as much information as possible regarding the machining requirements and current challenges.
We also accept consultations on material selection. -
FLOW.02ProposalBased on the information provided, we will propose the optimal machining method, lead time, and provide a quotation.
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FLOW.03Programming /
Material ProcurementUsing our accumulated machining data, our engineers select appropriate tools and set machining conditions.
Material procurement is carried out in parallel. -
FLOW.04MachiningAfter evaluating prototypes, machining conditions are finalized and production begins.
We support everything from small-lot to medium-volume production. -
FLOW.05InspectionThorough inspections are conducted using various measuring instruments.
Quality is verified from all aspects, including appearance, dimensions, and surface condition. -
FLOW.06DeliveryProducts that pass quality inspection are delivered to the designated location.
Frequently Asked Questions
- What kind of machining are you specialized in?
- Top Seiko’s core technologies are ultra-precision machining of difficult-to-machine materials and diffusion bonding. We have extensive experience in manufacturing custom components using ceramics, refractory metals, and quartz glass.
- What kind of products do you manufacture?
- We specialize in machining ceramics and certain metals. We do not manufacture machines or raw materials themselves.
- What materials can you process?
- We focus on custom machining of difficult-to-machine and brittle materials. Below are the materials we keep in stock. For materials not listed, we can source them from domestic and overseas suppliers.
Alumina (Al₂O₃), Aluminum Nitride (AlN), Zirconia (ZrO₂), Silicon Carbide (SiC), Various Machinable Ceramics, Quartz Glass / Heat-Resistant Glass, Silicon (Si), Sapphire (Al₂O₃), Composite Materials (MMC / CMC), Molybdenum (Mo), Tungsten (W), Tantalum (Ta), Titanium (Ti), Nickel (Ni), Niobium (Nb) - Do you machine acrylic or plastics?
- We do not process acrylic or plastics. We specialize in machining difficult-to-machine materials such as ceramics and metals listed above.
- Can you machine customer-supplied materials?
- Yes, we can process supplied materials if they are within our capabilities. We will confirm feasibility after reviewing the actual material.
- We have not decided on a suitable material. Can you propose one?
- Yes. Based on your requirements, we will propose the most suitable material along with the optimal machining method.
- What sizes and shapes can you handle?
- We have experience with material diameters up to φ700 mm. We also accept inquiries for long or specialized parts. Using our ultra-precision machining and diffusion bonding technologies, we can achieve highly complex geometries with high accuracy.
- What is the minimum order quantity?
- We support everything from single-piece production to mass production of several thousand units. Please feel free to contact us.
- What is your ordering process?
- After receiving drawings, we provide a quotation within a short period (same day to about one week).
- What is the typical lead time?
- Lead time varies depending on material, machining requirements, and quantity. For in-stock materials, delivery can be as fast as four weeks.
- Can you produce copy parts based on an existing component?
- We regret that we do not accept requests for copy parts or second-source production from end users.
- Where is your headquarters located?
- We are located in Shiga Prefecture, Japan.
- Can we visit your factory?
- We offer factory tours (headquarters and Nishiosaka plant) for customers considering new orders. Please note that some areas are restricted due to confidentiality.
- Can you deliver products overseas?
- Yes, we have extensive experience delivering to overseas companies and overseas sites of Japanese companies. We also provide support in English, so please feel free to contact us.
Material Guide
Top Seiko maintains a wide range of materials in stock, including various ceramics, refractory metals, and quartz glass, enabling support from the material selection stage.
We introduce the characteristics of each material, common material selection inquiries we receive, and case studies where we have supported material changes.